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The 31-year-old suffered the injury in training ahead of Wednesday's clash and was sent for treatment.

A brief statement from Cricket Australia read: "Clarke will continue to be treated and further assessed by Cricket Australia medical staff."

Sri Lanka lead the five-match ODI series 2-1 after game four was washed out in Sydney on Sunday.

Australia have continued opted to controversially rotate their players during the series, with Clarke along with opener David Warner and Matthew Wade rested for the first two games of the series.

Impossible

However Clarke's predecessor as captain Ricky Ponting has defended the policy, saying it is 'impossible' for fans to expect the country's best players to play all the time.

Ponting told Fox Sports: "The rotational thing...I'm totally for it.

"The people who are making these decisions are making them for the right reasons and they are making them for the betterment, they think, of the team and the individual players there and then at the time.

"Most of the guys in this current team now are playing all three forms of the game. And they are playing IPL (Indian Premier League) and they are playing Champions League (Twenty20 tournament). They are playing a lot of cricket.

"I can understand the public would be a little bit disappointed that our best players aren't playing every game but I really think it's impossible to expect that our best players do play every game."